Agreed. This question is pretty straightforward. The only real challenge is making sure you understand the difference between the network layer and the other OSI layers. But if you know your stuff, C) is the obvious choice.
I'm with you guys. The circuit-level gateway is all about the network layer, controlling the flow of packets and securing the network. It's not really concerned with the higher-level session or application stuff.
That's a good point, Elly. But I think the key distinction is that the circuit-level gateway is more focused on the network-level functions, like IP routing, rather than the end-to-end transport-layer functions. So I still think C) Network layer is the best answer.
Hmm, I'm not so sure about that. Aren't circuit-level gateways also responsible for managing TCP/UDP connections? Wouldn't that mean they're working at the transport layer as well?
I agree with Tawna. The circuit-level gateway firewall is responsible for making routing decisions and controlling the flow of traffic at the network layer. It's not operating at the data-link, session, or transport layers.
This question is a bit tricky, but I think the answer is C) Network layer. The circuit-level gateway firewall operates at the network layer, filtering traffic based on IP addresses and protocols.
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